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Test Code 1651 Sodium, Urine, Random

Performing Laboratory

Barnes-Jewish Hospital Laboratory


Indirect Ion-Selective Electrode (ISE)

Literature Reference:

Package insert: ISE/Na, K, Cl. Roche Corporation, 06/2014.

Specimen Requirements

Specimen Type: Urine, random
Container/Tube: Urine Complete Cup Kit
Specimen Volume: 10 mL

Collection Instructions: No additive.
Additional Information: See Urine Collection in Special Instructions for additional information.

Day(s) Test Set Up

Monday through Sunday
Turnaround Time:
STAT: 1 hour after receipt in laboratory
Routine: 2 to 4 hours after receipt in laboratory

Reference Values

No established reference intervals

Literature Reference:

Tietz, Burtis CA, Ashwood ER, Bruns DE eds: Textbook of Clinical Chemistry and Molecular Diagnostics 5th ed: Chapter 49, p. 1609, Elsevier, St. Louis, MO, 2012.

Test Classification and CPT Coding


Additional Information

For BJH Laboratory Use Only

Analyte Stability:

See Analyte Stability Chart in Special Instructions.

Specimen must be kept refrigerated before delivery to limit bacterial growth.

Laboratory Processing Instructions:

Test performed in BJH Core Lab. Mix urine well. Using 13x100 test tubes, prepare a 7-mL aliquot and deliver to the automated line for centrifugation and delivery to Cobas 8000 for analysis. Completed specimen is stored refrigerated for 5 days.

Specimen Transport Temperature


LOINC Code Information

Name LOINC Code
Sodium in urine 2955-3